Enhanced corrosion resistance of a chromium-free conversion/organic composite coating on an AZ91D magnesium alloy
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Influence of Zeolite Coating on the Corrosion Resistance of AZ91D Magnesium Alloy
The protective performance of zeolite coating on AZ91D magnesium alloy was evaluated using potentiodynamic polarisation and electrochemical impedance spectroscopy (EIS) in 0.1 M sodium chloride solution (NaCl). Electrical equivalent circuit (EEC) was developed based upon hypothetical corrosion mechanisms and simulated to correspond to the experimental data. The morphology and the chemical natur...
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In this paper, the corrosion residual strength of the AZ91D magnesium alloy in the presence of sulfate-reducing bacteria is studied. In the experiments, the chemical composition of corrosion film was analyzed by a scanning electron microscope with energy dispersive X-ray spectroscopy. In addition, a series of instruments, such as scanning electronic microscope, pH-meter and an AG-10TA materials...
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The zirconia stabilized by 3mol % Y2O3 (3YSZ) was applied onto the surface of the magnesium alloy AZ91D using electrophoretic deposition (EPD) from a non- aqueous solution. A Ni-P interlayer between the substrate and YSZ coating was also prepared by electroless plating. Finally, coatings were heat treated in control atmosphere at 400 °C. The preparation, microstructure and corrosion resistance ...
متن کاملEffect of heat treatment on corrosion and electrochemical behaviour of AZ91D magnesium alloy
An AZ91D ingot in the as-cast condition was homogenized by solution treatment and then aged for various periods of time. The microstructures produced were studied in detail and the b phase volume fraction was measured quantitatively. The Corrosion resistance of all the different microstructures was studied in 3.5% NaCl solution through weight loss measurement in constant immersion conditions an...
متن کاملFormation and Corrosion Resistance of Micro-Arc Oxidation Coating on Equal-Channel Angular Pressed AZ91D Mg Alloy
Aibin Ma 1,2,*, Fumin Lu 1, Qi Zhou 1, Jinghua Jiang 1,*, Dan Song 1,2, Jianqing Chen 1 and Yuxi Zheng 1 1 College of Mechanics and Materials, Hohai University, Nanjing 210098, China; [email protected] (F.L.); [email protected] (Q.Z.); [email protected] (D.S.); [email protected] (J.C.); [email protected] (Y.Z.) 2 Suqian Institute, Hohai University, Suqian 223800, China * Correspondence: ai...
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ژورنال
عنوان ژورنال: Materiali in tehnologije
سال: 2019
ISSN: 1580-2949,1580-3414
DOI: 10.17222/mit.2018.176